November 28, 2016 6:00 am
Immune cells from low-ranking monkeys were less effective at fighting the infection.
October 20, 2016 8:00 am
In a tour de force of reproductive biology, scientists in Japan have transformed mouse skin cells into eggs in a dish, and used those eggs to birth fertile pups. The report marks the first creation of eggs entirely outside a mouse. If the process could be made to work for humans, researchers could produce artificial eggs without needing to implant immature cells into ovaries to complete their development.
July 29, 2016 8:13 am
Dolly the Sheep started her life in a test tube in 1996 and died just six years later. When she was only a year old, there was evidence that she might have been physically older. At five, she was diagnosed with osteoarthritis. And at six, a CT scan revealed tumors growing in her lungs, likely the result of an incurable infectious disease. Rather than let Dolly suffer, the vets put her to rest.
July 18, 2016 9:23 am
Of the hundreds of monkeys in the University of Wisconsin’s primate center, a few — including rhesus macaque 827577 — are now famous, at least among scientists tracking the Zika virus. Since February, a team led by David H. O’Connor, the chairman of the center’s global infectious diseases department, has been conducting a unique experiment in scientific transparency. The tactic may presage the evolution of new ways to respond to fast-moving epidemics.
March 17, 2016 9:00 am
It’s said that dinosaurs went extinct 65 million years ago, but we technically still have dinosaurs running around Earth today (or at least their descendants). Modern-day birds evolved from certain species of dinosaurs, and now scientists have used birds to bring a little piece of the dinosaurs back. In a study published in Evolution, researchers announced that they had successfully grown “dinosaur legs” in chicken embryos.
February 29, 2016 8:24 pm
Researchers have found one of the oldest and most detailed fossils of the central nervous system yet identified, from a crustacean-like animal that lived more than 500 million years ago. The fossil, from southern China, has been so well preserved that individual nerves are visible, the first time this level of detail has been observed in a fossil of this age.
February 25, 2016 10:10 am
Dodos, best known for being dead and, well, dumb, may not have been total doofuses. A study published Tuesday in Zoological Journal of the Linnean Society suggests that the birds had brains of about the same relative size as a modern pigeon’s.
January 25, 2016 4:10 pm
A video she recorded after she left the dog alone for five hours showed Hachi in a full-blown panic attack, opening the refrigerator door and pulling items out.
January 22, 2016 6:33 pm
Humans are not the only species that console their dear ones. In this recent study, researchers found that prairie voles console their loved ones who are under stress. It turns out that oxytocin, the famous “love hormone,” is the factor behind this mechanism.
November 30, 2015 6:23 pm
Other than the few small luxuries afforded them, like private access to a large patch of grass, there was nothing to mark the two hornless dairy calves born last spring at a breeding facility here as early specimens in a new era of humanity’s dominion over nature.